Adjustable bearing for valves.



G. B. PETSGHE.

ADJUSTABLE BEARING FOR VALVES.

APPLICATION FILED HAY 13, 1903. Patented 6 /-Z 2 SHEETS-SHEET l.

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G. B. PETSCHE. ADJUSTABLE BEARING FOB. VALVES.

APPLICATION FILED MAY 13, 1903. 926,762. Patented July 6, 1909.

2 SHEETS-SHEET 2.

JNVENTOR.

ATTORNEY'.

WbllNESSES.

UNITED `rArnNr onirica.

GUSTAV BERNHARD PETSCHE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR 'IO SOUTH- WARK FOUNDRY MACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPO- RATION OF PENNSYLVANIA.

ADJUSTABLE BEARING FOR VALVES.

To all whom it may concern.'

Be it known that I, GUsTAv BERNHARD PETseHE, a subject ol' the Emperor ol` Germany, residing in the city and county ol' Philadelphia., in the State ol' Pennsylvania, have invented a certain new and useful Improvement in Adjustable Bearings l'or Valves, oll which the following is a true and exact description, reference being had to the accompanying drawings, which form a part thereof.

My invention relates to the construction ol' adjustable back bearings for sliding valves and has for its object, particularly, to provide means lor adjusting such bearings, inclosed in a closed chamber, from the outside of said chamber, and also to improve the character ol' the back bearings and of' the means Al'or adjusting them.

The nature of my improvements will be best understood as described in connection with the drawings which illustrate it in various modifications, and in which- Figure 1, is a central longitudinal section through the delivery valve ol' a blowing engine and through the back bearing of said valve and its adjusting mechanism. Fig. 2, is a cross-sectional view of the parts shown in Fig. 1. Fig. 3, is a perspective view ol one of the guides and bolts shown in Fig. 2. Fig. 4, is a separate perspective view ol' one ol' the sleeve bolts, shown in Figs. 1 and 2. Fig. 5, is a central longitudinal section through a modified construction ol'l delivery valve bearing connections. Fig. 6, a crosssectional view ol the parts shown in Fig. 5. Figs. 7, and S, are perspective views oll the adjusting bolts ol' Figs. 5 and 6. Figs. 9, and 10, are longitudinal and cross-sectional views of' another modification. Figs. 11 and 12, perspective views of the adjusting bolts ol' Figs. 9, and 10. Figs. 13, and 14, are longitudinal and cross-sectional views ol still another modification. Figs. 15, and 16, are perspective views ol' the adjusting bolts oll Figs. 13 and 14. Figs. 17, and 1S, are longitudinal and cross-sectional views showing the application of certain features ol' my invention to the admission valve ot a blowing engine. Figs. 19, and 20, are perspective views ol' the adjusting bolts o'l Figs. 17 and 18.

a, (Figs. 1, 2, 5, 6, 9, 10, 13 and 14), indicates the seat and ports for the delivery valve ol' a blowing engine, the said ports opening into the receiver chamber l, of the Specification of Letters Patent.

Application filed May 13, 1903.

Patented July 6, 1909.

Serial No. 156,937.

engine; c, indicating the outer removable cover ol' said chamber which laces the valve seat, and c, in the modification ol' Figs. 13 and 14, .indicating a fixed part oll the outer wall olil chamber I), occupying the same position as cover c, with regard to the seat a..

d, is the delivery valve working on seat a., and having in the figures mentioned, a centrally located longitudinal rear face c, against which rests the single back bearing f, o'l' Figs. 1, etc., or f, of Figs. 9 and 10.

g, g, etc., indicate studs secured to and projecting from the back of the bearings f, and from which project the bolts 7L, ol Figs. 1, 2, and 3, which are separate from but se* cured to the studs, or the bolts 7V, of Figs. 5 and 6 or 13, and which are formed integral with the studs -(1, but otherwise similar, except in proportions, to the construction first noted. In all cases noted, a shoulder i, is formed at the head of studs g, but in Figs. 9 and 10, where the deep bearing j", is used, the stud g, is omitted and unshouldered bolts h2, extend from said bearing.

j j, ete., indicate threaded perforations formed in the cover c, or outer wall c, opposite to the points on the back bearings lrom which the studs g, or bolts t, extend.

7c, 71:, etc., are sleeve bolts, screwing into the threaded perforations Z, Z, etc., are nuts screwing on the ends of the bolts h, etc.

m., m, etc., are lock nuts on bolts c.

n, n, etc., Figs. 1 and 2, are cylindrical bosses extending inward from cover c, and fitting on the studs g.

n, n', etc., Figs. 13 and 141, are bosses extending inward like bosses n, but having their ends provided with ribs which embrace the back bearing as shown, and n2, n2, Figs. E) and 10, are guide ribs which extend from cover c, and abut against the sides of back bearingj".

In Figs. 17, and 1S, which show the invention as applicable to the admission valve, a, indicates the valve seat which faces the inside of the cylinder indicated at b; c2, indicating the outer wall of the cylinder having perforations formed in it for the bolts, as indicated at d, is the valve, having, in this modication, bearing surfaces c, c, at its edges for the back bearings, here indicated at f2, The studs g, bolts 7L, and 7c, and nuts Z, and m, shown in these figures do not dilie r materially from those before described.

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In all the modifications illustrated, save those of Figs. 9, and 10, the sleeve bolts Zr, screw against the shoulders i, of the bolts g, ZL, or their equivalents, and thus form abutments which determine the position of the back bearing or bearings for the valve.

In Figs. 9 and 10, the bolts ZC, abut directly against the back bearing f', which, in this case is deeper than in the others. In practice the bearing is adjusted by loosening the nuts Z, and my, and screwing the sleeve bolts Zr, down against the shoulders i, or bearing j, till the back bearing is forced into close contact with the bearing surfaces of the valve. After this is done, the sleeve bolts are turned backward fora distance which will leave a proper clearance between the valve and its bearing, and the nuts Z, are screwed down on bolts Zi, against the head of bolts Zr, drawing the back bearings attached to bolts h, up hard against the sleeve bolts, which, by direct abutment or through shoulders "i, support it or them. The lock nuts m, are of course screwed down against head c, to lock the bolts 7c, in position. It will be seen that in all cases the sleeve nuts and bolts Z, are accessible from the outside of the chamber b, or b', inclosing the valve and its back bearing so that the adjustment of the bearing can be made at any time without requiring the chamber to be opened.

The construction illustrated in the ligures, other than Figs. 17 and 18, embodies the provision of the single narrow bearing surface e, along the center of the valve and the use of the single back bearing, such asf, to hold the valve to its seat; this construction is not only less expensive than one requiring two bearings, such as shown in Figs. 17 and 18, but is one which renders the adjustment of the bearing much easier and more satisfactory.

In such constructions as are shown in Figs. 1 to 15, the back bearing, not being steadied by contact with the walls of the chamber, as in Figs. 17 and 18, must be provided with some secure support; a multiple series of studs, as g, g, etc., Figs. 5, and 6, may afford such support, but it is preferable to provide additional guides or braces, and in Figs. 1 and 2, I have shown the supporting cylindrical bosses n, n, etc., guiding studs g, while in Figs. 13 and 14, similar bosses f/L, are provided with flanges embracing the top of the bearing to prevent its lateral movement, and in Figs. 9 and 10, where the deep bearing f', is employed, guides n2, serve the function of guiding the bearing.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is,

1. A grid slide valve, in combination with an adjustable back bearino therefor, a series of bolts secured to said zback bearing and having their outer ends threaded, a fixed support having a series of threaded perforations,

a series of sleeve bolts screwing in said per-v forations and through which the bolts secured to the bearing extend, said sleeve bolts serving as abutments for the back bearing, and a series of nuts screwing on the threaded ends of the bolts secured to the bearing and against the ends of the sleeve bolts.

2. A grid slide valve, in combination with an adjustable back bearing therefor, a series of bolts secured to said back bearing, said bolts having shoulders formed on them and having their outer ends threaded, a fixed support having a series of threaded periorations, a series of sleeve bolts screwing in said perforations and through which the bolts se cured to the bearing extend, said sleeve bolts abutting against the shoulders of the bolts secured to the bearing, and series of nuts screwing on the threaded ends of the bolts passing through the sleeve bolts, and against the ends of said sleeve bolts.

3. A grid slide valve, in combination with an adjustable back bearing therefor, a series ofbolts secured to said back bearing and having their outer ends threaded, a Jfixed support having a series of threaded perforations and inwardly extending guides arranged to hold the back bearing against lateral displacement, a series of sleeve bolts screwing in said perfcrations and through which the bolts secured to the bearing extend, said sleeve bolts serving as abutments for the back bearing, and a series of nuts screwing on the threaded ends of the bolts secured to the bearing and against the ends of the sleeve bolts.

4. A grid slide valve in combination with an adjustable back bearing therefor, a series of bolts secured to said back bearing, said. bolts having shoulders formed on them and having their outer ends threaded, a fixed support having a series of threaded perforations and inwardly extending guides arranged to hold the back bearing against lateral displacement, a series of sleeve bolts screwing in said perforations and through which the bolts secured to the bearing exj tend, said sleeve bolts abutting against the 7 shoulders of the bolts secured to the bearing, and a series of nuts screwing on the threaded ends of the bolts passing through the sleeve bolts, and against the ends or' said sleeve bolts.

5. In a blowing engine, the combination of a sliding gridiron air valve having a narrow back bearing face located midway between its side edges and extending parallel to the direction of sliding movement of the valve, in combination with an adjustable back bearing engaging said bearing face only of said valve.

6. A grid slide valve having a central longitudinally running and relatively narrow ack bearing face, in combination with an adjustable back bearing arranged to contact with said central face only, a series of bolts secured to said back bearing and having their outer ends threaded, a fixed support having a series of threaded perforations corresponding to the bolts, a series of sleeve bolts screwing into said perforations and through which the bolts secured to the bearing extend, said sleeve bolts serving as abutinents for the back bearing, and a series of nuts screwing on the ends ol'l the bolts which extend through the sleeve bolts.

7. A grid slide valve having a central longitudinally running back bearing face, in combination with an adjustable back bearing arranged to contact with said central tace, a series of bolts secured to said back bearing, said bolts having shoulders formed on them and having their outer ends threaded, a 'fixed support having a series et' threaded perforations corresponding to the bolts, a series of sleeve bolts screwing into said perforations and through which the bolts secured to the bearing extend, said sleeve bolts abutting against the shoulders of the bolts passing through them, and a series of nuts screwing on the ends of the bolts which extend through the sleeve bolts.

S. A grid slide valve having a central longitudinally" running back bearing lace, in combination with an adjustable back bearing arranged te contact with said central face, a series ot bolts secured to said back bearing and having their outer ends threaded, a fixed support having a series ot' threaded pert'orations corresponding to the bolts and inwardly extending guides, arranged to hold the back bearing against lateral displacement, a series ol' sleeve bolts screwing into said perforations and through which the bolts secured to the bearing extend, said sleeve bolts serving as abutments for the back bearing, and a series of nuts screwing on the ends of the bolts which extend through the sleeve bolts.

9. In an engine having a grid slide valve working in an inclosed chamber, the combination with said slide valve of an adjustable back bearing, a series of bolts secured to said bearing and extending from the valve inclosing chamber through the outer wall thereof, said bolts having their outer ends threaded, a series of threaded pert'orations termed in the outer wall of the valve inclosing chamber through which the bolt ends aforesaid pass loosely, a series of sleeve bolts screwing trom outside into the threaded perforations and surrounding the bolts secured to the bearing, said sleeve bolts serving as abutments for the adjustable bearing and nuts screwing on the ends of the bolts passing through the sleeve bolts.

10. ln an engine having a grid slide valve working in an inclosed chamber, the combination with said slide valve ol an adjustable back bearing, a series of bolts secured to said bearing and extending irom the valve inclosing chamber through the outer wall thereol", said bolts having shoulders formed on them and their outer ends threaded, a series et threaded perforations l'ormed in the outer wall el the valve inclosing chamber through which the bolt ends aforesaid pass loosely, a series of sleeve bolts screwing trom outside into the threaded perl'orations and surrounding and abutting against the shoulders ot the bolts secured to the bearing, and nuts screwing on the ends olt the bolts passing through the sleeve bolts.

l1. In an engine having a grid slide valve working in an inclosed chamber, the combination with said slide valve of an adjustable back bearing, also situated in the chamber inclosing the valve, and means lor adjusting said back bearing and locking it in -lixed position, said means connecting therewith in the chamber, extending through the outer wall of said chamber, and operated through portions thereot' accessible from the outside oll said wall.

12. In an engine having a grid slide valve working in an inclosed chamber, the combination ot an adjustable back bearing lor the slide valve also situated in said chamber, a removable cover tor the chamber' closing an opening directly opposite the valve and bearing and formed with a series ol' threaded perforations, bolts secured to the back ol the bearing and extending through the perforations in the cover, sleeve bolts extending through said perlorations and serving as abutinents l'or the back bearing, and nuls screwing on the ends of the bolts secured to the bearing and against the heads ol the sleeve bolts.

13. In an engine having a grid slide valve working in an inclosed chamber, the combination of an adjustable back bearing lor the slide valve also situated in said chamber, a removable cover lor the chamber closing an opening directly opposite the valve and bearing and i'ormed with a series o1" threaded pert'orations, and also with guides l'or the bearing, bolts secured to the back of the bearing and extending through the perforations in the cover, sleeve bolts screwing into said perfor-ations and serving as abutments for the back bearing, and nuts screwing on the ends el the bolts secured to the bearing and against the heads oi the sleeve bolts.

GUSTAV BERNHARD Vlll'lSClll'l.

Vtlitnesses:

JOSEPH F. ONEILL, D. STEWART. 

